51731481503 has 8 divisors (see below), whose sum is σ = 55956251568. Its totient is φ = 47541772224.

The previous prime is 51731481467. The next prime is 51731481511. The reversal of 51731481503 is 30518413715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51731481503 - 2¹⁴ = 51731465119 is a prime.

It is a super-2 number, since 2×51731481503² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51731481563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8762126 + ... + 8768027.

It is an arithmetic number, because the mean of its divisors is an integer number (6994531446).

Almost surely, 2^51731481503 is an apocalyptic number.

51731481503 is a deficient number, since it is larger than the sum of its proper divisors (4224770065).

51731481503 is a wasteful number, since it uses less digits than its factorization.

51731481503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17530393.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 51731481503 in words is "fifty-one billion, seven hundred thirty-one million, four hundred eighty-one thousand, five hundred three".